Question

The sum of the angle measures of a quadrilateral is 360 degree. Write and solve an equation to find the value of x.

Answer 1

Answer: 115+85+60+x=360

x=100 degrees

Explanation:

115+85+60+x=360==> 115, 85, 60, and x are all 4 angles in the quadrilateral

200+60+x=360

260+x=360

260-260+x=360-260

x=360-260

x=100 degrees